The TONOREF III provides the automated calculation function of the corrected IOP based on the central corneal thickness. Objective measurement of accommodation is performed with patient’s focusing on a target that moves from distance to near.

Features:
- Combination of auto refractometer, auto keratometer, non contact tonometer and non contact pachymeter
- High measurement accuracy
- Clinically important functions ‐ accommodation measurement and opacity assessment
- User-friendly design
- Space saving design that is a comfortable and efficient upgrade to your practice

Automated calculation of corrected IOP
The TONOREF III provides the automated calculation function of the corrected IOP based on the central corneal thickness.

Accommodation measurement
Objective measurement of accommodation is performed with patient's focusing on a target which moves from distant to near.

Opacity assessment
The retroillumination image allows evaluation of media opacity.

Large puil zone imaging method
The large pupil zone imaging method measures the central refraction and a large area refraction.The difference of the measurement allows assessment of the effect of pupil size such as a vision in dim light.

Quick ref measurement mode
The quick ref measurement mode* provides faster and simpler measurement for patients who have difficulty in alignment. By relaxing the measurement range, children or patients whose eye movement is not stable can still be measured smoothly.

*Please note that during the quick ref measurement mode, the results are more likely to fluctuate compared to the normal AR measurement mode.

Double mire ring method
Keratometry measurements performed with the mire ring method reduce interference from the eyelids.The TONOREF III performs measurements at diameters of 3.3 mm and 2.4 mm.Comparison of the two values allows a better understanding of the cornea shape.

Specifications:
Auto refractometer 
- Measurement range : Sphere -30.00 to +25.00 D (VD = 12 mm) (0.01/0.12/0.25 D increments)                     
                                  Cylinder 0 to ±12.00 D (0.01/0.12/0.25 D increments)                     
                                  Axis 0 to 180° (1°/5° increments)
- Minimum measurable pupil diameter : ø2 mm
- Measurement area : ø1 to 6 mm- Chart : Scenery chart

Auto keratometer
- Measurement range : Curvature radius 5.00 to 13.00 mm (0.01 mm increments)                     
                                  Refractive power 25.96 to 67.50 D (n = 1.3375) (0.01/0.12/0.25 D increments)                     
                                  Cylindrical power 0 to ±12.00 D (0.01/0.12/0.25 D increments)                     
                                  Axis 0 to 180º (1°/5° increments)
- Measurement area : ø3.3 mm (R = 7.7 mm), ø2.4 mm (R = 7.8 mm)

Non contact tonometer
- Measurement range : 1 to 60 mmHg (1 mmHg increments)
- Measurement range setting : APC40, APC60 (APC = Automatic Puff Control), 40, 60
- Working distance : 11 mm
- Eye fixation : Inner fixation light

Non contact pachymeter
- Measurement range : 300 to 800 μm (1 μm increments)
- IOP correction by corneal thickness : Automatic calculation
- Retroillumination image : Available
- Accommodation measurement range : 0 to 10.00 D (0.01/0.12/0.25 D increments)
- PD measurement range : 30 to 85 mm (1 mm increments)                         
                                       (Near point PD: 28 to 80 mm at WD = 40 cm)
- Corneal size measurement range : 10.0 to 14.0 mm (0.1 mm increments)
- Pupil size measurement range : 1.0 to 10.0 mm (0.1 mm increments)
- Auto tracking : X-Y-Z directions
- Auto shot : Available
- Display : Tiltable 7.0-inch color LCD with touch panel
- Printer : Thermal line printer with easy loading and auto cutter
- Interface : RS-232C: 2 ports, LAN: 1 port, USB: 1 port             
                   Wireless LAN (WLAN)*: 1ch
- Power supply : AC 100 to 240 V, 50/60 Hz
- Power consumption : 100 VA
- Dimensions/mass : 260 (W) × 495 (D) × 505 (H) mm / 22 kg at ARK standard mode                   
                               260 (W) × 495 (D) × 460 (H) mm / 22 kg at NT standard mode                   
                               10.2 (W) x 19.5 (D) x 19.9 (H)" / 48 lbs. at ARK standard mode                   
                               10.2 (W) x 19.5 (D) x 18.1 (H)" / 48 lbs. at NT standard mode

Package includes:
- Nidek Tonoref III
- Spherical modeleye / contact lens holder (integral type)
- Power cord
- Dust cover
- Chinrest paper
- Fixing pins for chinrest paper (2 units)
- Operator's manual
- EyeCa-RW2 Eye Care card Barcode scanner Magnetic card reader  Communication cable (RS-232C) Communication cable (LAN)
- Printer paper (3 rolls)